This document provides an overview of object-oriented programming (OOP) concepts in PHP, including classes, objects, properties, methods, inheritance, and magic methods. It defines classes as blueprints that define an object's structure and relationships, while objects are instances built from those blueprints. Properties and methods are used to store data and perform actions within classes. Inheritance allows one class to inherit properties and methods from another. Magic methods like __construct() and __destruct() are automatically called during object instantiation and destruction. Later sections demonstrate class inheritance, overwriting inherited properties and methods, and using multiple class instances.
This ppt gives information about:
1. OOPs Theory
2. Defining a Class
3. Creating an Object
4. The $this Attribute
5. Creating Constructors
6. Creating Destructors
Collection Framework in Java | Generics | Input-Output in Java | Serializatio...Sagar Verma
Collection Framework in Java,Generics,Input-Output in Java,Serialization,Inner Classes
Collection Framework in Java
The Collections Framework - Set Interface- List Interface - Map Interface - Queue Interface -Sorting collections using utility methods
equals () and hash Code contract in Java collections
Overriding equals and hash Code methods in Java
Generics
Generics for Collections, class and methods
Input-Output in Java
What is a stream? ,Bytes vs. Characters, Java IO API ,Reading a file; writing to a file using various APIs
Reading User input from console , PrintWriter Class
Serialization
Object Serialization , Serializable Interface , De-Serializable
Inner Classes
Inner Classes ,Member Classes, Local Classes, Anonymous Classes, Static Nested Classes
This PPT gives information about:
Advanced Theories
Inheriting Classes
Inheriting Constructors and Destructors
Overriding Methods
Access Control
Using the Scope Resolution Operator
Creating Static Members
Abstract Classes and Methods
This ppt gives information about:
1. OOPs Theory
2. Defining a Class
3. Creating an Object
4. The $this Attribute
5. Creating Constructors
6. Creating Destructors
Collection Framework in Java | Generics | Input-Output in Java | Serializatio...Sagar Verma
Collection Framework in Java,Generics,Input-Output in Java,Serialization,Inner Classes
Collection Framework in Java
The Collections Framework - Set Interface- List Interface - Map Interface - Queue Interface -Sorting collections using utility methods
equals () and hash Code contract in Java collections
Overriding equals and hash Code methods in Java
Generics
Generics for Collections, class and methods
Input-Output in Java
What is a stream? ,Bytes vs. Characters, Java IO API ,Reading a file; writing to a file using various APIs
Reading User input from console , PrintWriter Class
Serialization
Object Serialization , Serializable Interface , De-Serializable
Inner Classes
Inner Classes ,Member Classes, Local Classes, Anonymous Classes, Static Nested Classes
This PPT gives information about:
Advanced Theories
Inheriting Classes
Inheriting Constructors and Destructors
Overriding Methods
Access Control
Using the Scope Resolution Operator
Creating Static Members
Abstract Classes and Methods
If you are new to programing in general OR if you started programing in php before Object-Oriented Programming was even available, this presentation is designed to help you get up to speed on Object-Oriented terminology and give you practical skills as well as resources to continue learning.
Spring Data is a high level SpringSource project whose purpose is to unify and ease the access to different kinds of persistence stores, both relational database systems and NoSQL data stores.
Java basic part 2 : Datatypes Keywords Features Components Security Exceptions Soumen Santra
Features
JVM
Architecture
Security
Data Types
Class and Object
Program
First Java Application
Declaring and creating objects
Arrays
Constructors
this keyword
static keyword
Inheritance
Overriding
Access Modifiers
super keyword
final keyword
abstract classes
interfaces
Exceptions (error handling)
User Defining exceptions
If you are new to programing in general OR if you started programing in php before Object-Oriented Programming was even available, this presentation is designed to help you get up to speed on Object-Oriented terminology and give you practical skills as well as resources to continue learning.
Spring Data is a high level SpringSource project whose purpose is to unify and ease the access to different kinds of persistence stores, both relational database systems and NoSQL data stores.
Java basic part 2 : Datatypes Keywords Features Components Security Exceptions Soumen Santra
Features
JVM
Architecture
Security
Data Types
Class and Object
Program
First Java Application
Declaring and creating objects
Arrays
Constructors
this keyword
static keyword
Inheritance
Overriding
Access Modifiers
super keyword
final keyword
abstract classes
interfaces
Exceptions (error handling)
User Defining exceptions
Abstraction, Encapsulation, Polymorphism, and Interfaces: whether you’ve been programming in PHP for years or are just starting your journey, these terms can be overwhelming even on a good day. Variables, conditionals, those all make sense. But this whole Object-Oriented thing is WAY more complicated. Not only that, people that already understand it act like it’s so easy and they talk right over the simple questions and never explain the basic concepts in a way that actually makes sense. In this session we’ll take you through real life examples of Object-Oriented terminology in a way that will make sense of all the mumbo jumbo and allow you to utilizing OOP immediately.
To better understand the behavior of servlets, let’s take a look at the life cycle of servlets.
A servlet is basically a small Java program that runs within a Web server. It can receive requests from clients and return responses. The whole life cycle of a servlet breaks up into 3 phases:
• Initialization: A servlet is first loaded and initialized usually when it is requested by the corresponding clients. Some websites allow the users to load and initialize servlets when the server is started up so that the first request will get responded more quickly.
• Service: After initialization, the servlets serve clients on request, implementing the ap- plication logic of the web application they belong to.
• Destruction: When all pending requests are processed and the servlets have been idle for a specific amount of time, they may be destroyed by the server and release all the resources they occupy.
More specifically, the behavior of a servlet is described in javax.servlet.Servlet interface, in which the following methods are defined:
• public void init(ServletConfig config) throws ServletException
This method is called once when the servlet is loaded into the servlet engine, before the servlet is asked to process its first request.
The init method has a ServletConfig parameter. The servlet can read its initialization arguments through the ServletConfig object. How the initialization arguments are set is servlet engine dependent but they are usually defined in a configuration file.
A typical example of an initialization argument is a database identifier. A servlet can read this argument from the ServletConfig at initialization and then use it later to open a connection to the database during processing of a request:
private String databaseURL;
public void init(ServletConfig config) throws ServletException { super.init(config);
databaseURL = config.getInitParameter("database");
}
• public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException
This method is called to process a request. It can be called zero, one or many times until the servlet is unloaded.
Once a servlet is loaded, it remains in the server’s memory as a single object instance. Thereafter, the server invokes the servlet to handle a request using a simple, lightweight method invocation. Unlike with CGI, there’s no process to spawn or interpreter to invoke, so the servlet can begin handling the request almost immediately. Multiple, concurrent requests are handled by separate threads, so servlets are highly scalable.
Servlets are naturally enduring objects. Because a servlet stays in the server’s memory as a single object instance, it automatically maintains its state and can hold on to external resources, such as database connections, that may otherwise take several seconds to establish. The following servlet presents information about how many times it has been accessed:
To better understand the behavior of servlets, let’s take a lo
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Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.